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Finding the Fourth Proportional to 4,981.70, 7,472.54 and 1,518.95

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Solution

The fourth proportional to 4,981.70, 7,472.54 and 1,518.95 is: 2,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.70 : 7,472.54 = 1,518.95 : x
  2. Step 2: Convert to fraction form
    4,981.70/7,472.54 = 1,518.95/x
  3. Step 3: Cross multiply
    4,981.70x = 7,472.54 × 1,518.95
  4. Step 4: Simplify right side
    4,981.70x = 11,350,369.68
  5. Step 5: Solve for x
    x = 11,350,369.68/4,981.70
  6. Step 6: Final answer
    x = 2,278.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.